[Bug]: DXF files converted by Filee cannot be opened in AR-CAD (Shift-JIS / ASCII DXF compatibility) #783

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1. huangjhao5-boop

   added

   bugSomething isn't workingSomething isn't working

   on Oct 30, 2026
2. KnifeLemon commented on Oct 30, 2026

   

   KnifeLemon

   on Oct 30, 2026

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   Thanks for the report! Two of the points are already how Filee writes DXF, so the cause is probably something else:

   • ASCII, never binary: Filee always writes ASCII DXF.
   • No UTF-8 before AutoCAD 2007: a DXF for AutoCAD 2000 (AC1015) stores its text in a code page, not UTF-8. Filee picks the code page from the drawing's text and writes it to $DWGCODEPAGE. For example, Japanese kana gives ANSI_932 (Shift-JIS).

   One suspect: a drawing whose text is only kanji, with no kana, can get ANSI_950 (Big5) or ANSI_936 (GBK) instead of ANSI_932. Both can hold the same characters, and Chinese comes first on a tie. A Japanese-only program like AR-CAD may refuse that.

   To find out, could you add:

   1. The $DWGCODEPAGE value: open the converted DXF in Notepad, search for $DWGCODEPAGE, and copy the line after 3 (for example ANSI_932 or ANSI_950).
   2. AR-CAD's exact message: a screenshot of the error.
   3. A sample: the original drawing and Filee's output, zipped. A small drawing that shows the problem is enough.
   4. The text in the drawing: Japanese with kana, Japanese kanji only, or Traditional Chinese?

   If it is the code page, we can let the preset choose it, or prefer Shift-JIS on a Japanese system.
3. huangjhao5-boop commented on Oct 30, 2026

   

   huangjhao5-boop

   on Oct 30, 2026 via email

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   Thanks for checking. 1. **$DWGCODEPAGE:** `ANSI_932` 2. **AR-CAD error:** It only shows “エラー” (Error), with no detailed message. 3. **Sample files:** Sorry, I’m not able to upload the original drawing or the exported file. 4. **Text in the drawing:** Japanese, including both kana and kanji. Since the code page is already ANSI_932, the issue may not be the code page detection in this case.

   …

   On Thu, 29 Oct 2026 19:17:13 -0700, Myeonggu Kim ***@***.***> wrote: KnifeLemon left a comment (KnifeLemon/Filee#783) Thanks for the report! Two of the points are already how Filee writes DXF, so the cause is probably something else: - **ASCII, never binary:** Filee always writes ASCII DXF. - **No UTF-8 before AutoCAD 2007:** a DXF for AutoCAD 2000 (AC1015) stores its text in a code page, not UTF-8. Filee picks the code page from the drawing's text and writes it to `$DWGCODEPAGE`. For example, Japanese kana gives `ANSI_932` (Shift-JIS). **One suspect:** a drawing whose text is **only kanji, with no kana**, can get `ANSI_950` (Big5) or `ANSI_936` (GBK) instead of `ANSI_932`. Both can hold the same characters, and Chinese comes first on a tie. A Japanese-only program like AR-CAD may refuse that. To find out, could you add: 1. **The `$DWGCODEPAGE` value:** open the converted DXF in Notepad, search for `$DWGCODEPAGE`, and copy the line after `3` (for example `ANSI_932` or `ANSI_950`). 2. **AR-CAD's exact message:** a screenshot of the error. 3. **A sample:** the original drawing and Filee's output, zipped. A small drawing that shows the problem is enough. 4. **The text in the drawing:** Japanese with kana, Japanese kanji only, or Traditional Chinese? If it is the code page, we can let the preset choose it, or prefer Shift-JIS on a Japanese system. -- Reply to this email directly or view it on GitHub: #783 (comment) You are receiving this because you authored the thread. Message ID: ***@***.***>
4. KnifeLemon commented on Oct 30, 2026

   

   KnifeLemon

   on Oct 30, 2026

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   Thanks for checking! ANSI_932 with kana and kanji is the right code page, so that's ruled out.

   Without a file we have to narrow it down another way. Could you try two things?

   1. Other DXF versions. In the preset that makes the DXF (Settings → Presets → its CAD card), change the version and convert the same drawing again, then tell us which ones AR-CAD opens:
      • AutoCAD 2000
      • AutoCAD 2004
      • AutoCAD 2007 (UTF-8 text)
      • AutoCAD 2018
   2. A test drawing you can share. In ZWCAD, draw one line and one Japanese text in a new drawing, save it, and convert it with Filee. If AR-CAD still says エラー on that, please attach both files. They hold nothing private, and with them we can find the exact part AR-CAD rejects.

   Also, the next release updates ACadSharp, the library that writes the DXF, from 3.8.0 to 3.8.35 (#811), with many DXF writing fixes. It may be worth trying again then.